Elevator signaling apparatus.



P. T. KENNY.

ELEVATR SIGNAUNG APPARATUS.

APPLICATION FILED ocT. 3, 1901.

Patented Feb. 29, 1916.

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ELEVATOR SIGNALING APPARATUS.

APPLICATION Flu-:n 00113, 1901.

Patented Feb.29,1916.

2 SHEETSSHEET 2- UNITED STATES PATENT orme PAUL T. KENNY, OF NEW YORK,N.' Y., ASSIGNOB '10 ELE'VTOR SUPPLY &. REPAIR COMPANY, A CORPORATION 0FILLINOIS.

Specification of Letters Patent.

Patented Feb. 29, 191 6.

Application led October 3, 1907. Serial No. 395,696.

vator Signaling Apparatus, of which the following is a specification,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates tok an elevator signaling apparatus, and my `objectis to improve and simplify lthe construction.

One of my objects is to provide a series of electrically-operated visualsignals, one for each floor, for each car, with mechanism for operating.the same in each-direction of movement of the car by means of up anddown controllers at each floor to be operated by the passengers, andwhich I have'generically termed passengers buttons.

Another bbject is to provide a particular arrangement of mechanism forrestoring to normal condition the mechanism set bythe passengersbuttons.

A furtherobject is to provide a construction by which the elevator gatesor doors at the floors may restore-to normal condition the mechanismsset by the passengers buttons and which shall be more economical inwiring than has heretofore been the casein prior devices.

My invention will be set forth in the claims. y f

In the preferred embodiment of my invention shown in the drawings,Figure 1 represents a general diagrammatic view; Fig. 2

a detail of the same; and Fig. 3 a diagram are intended to show the mainfeatures of.

stillmore simplified than Fig. 1. Fig. 4 is'a further diagram of aportion of a construction shownin Fig. 1.

All these drawings are diagrammatic and the apparatus more clearly thanconstructional drawings will do. I have shown my inventiondiagrammatically in the drawings instead of by illustrat-- ing the samein its particular mechanical construction, because it may -be morelreadily-understood and appreciated and 1t will of the invention mayerated .visual signals,

be evident to any mechanic skilled in the art how my lnvention could beembodied, and I belleve that a more thorough understanding be had fromthe diagram than by illustrations of the particular mechanlcal deviceswhich might be made use of. A

Referring to the drawings, 1 and'2 represent elevator carsl moved up anddown in their shafts by a suitable hoisting mechanlsm not shown, andpassing the floor gates or doors 3, 4, 5 and 6. The gates 3 and 5 areassumed to be at the third Hoor, and 4 and 6 at the fourth door, shownin each car a series of electrically-opsuch as ordinary incandescentlamps 7 and 8 in car 1, and 9v and 10 in car 2, the lights 7 and 9represent ing the third floor, and 8 and 10 the fourth floor. In orderto operate the same I have provided at each floor up and down mechanlsmto be operated by the intending passengers and'which I have genericallytermed passengers buttons. 11 and 12 represent the up and downpassengers buttons at,

the third floor, and 13 and lfithose at the lfourth floor. They mayobviously be of any .deslred construction, as will be evident to anyoneskilled in the art. I have provided mechanism corresponding to eachbuttonwhich is set by itsbutton when the latter is operated, preferablyby closing, a break in a normally-open circuit.

In4 the construction illustrated in the drawings I have provided settingmagnets 15, 16, 17 and 18, connected to the passengers buttons 11 to 14,respectively, at one side, and at the other side connected to contacts19, 20, 21 and 22. 23 to 26 represent pivoted switch arms which normallyrest upon their respective contacts justgnamed, as indicated beconnected to the return wire 27, which leads back to the source ofelectro-motive source as indicated, for example, by dynamo 28. When thebutton 12, for example, is pressed, a circuit will be closed from thedynamo through the button magnet 16,.con tact`20, switch arm 23, andback to the dynamo, thus energizing the setting mag- -by 23, 26, forexample, and said levers may net 16 and drawing the switch arm over tothe position of switch arm 25, that is, so that the switch arm 23 willleave contact 20 and touch a contact 29. Each of the other switch armsis provided with. a contact similar to 29, as indicated by to 32. Theswitch arms 24 and 25 are represented in full lines as having beenthrown, the up button 11` on the third floor, and the down button 14 onthe fourth floor, being assumed to have already been operated. When aswitch arm is thrown to its set position, itwould immediately light upone of the lights in the car,'. providing that thecircuit from thatlight.

was closed by the switch arm as soon as it was thrown, but instead oflighting up the light immediately I have preferred to pro-l vide acommutator which coperates with the mechanism which is set by thepush-but ton so that neither one alone willy display `the signal. In theembodiment shown in the drawings the commutator for car'1 comprisesfixed contacts 33 to 36 and a moving contact 37 which is movedcorrespondingly with the movement of the car, although usu ally muchslower as is commonin the art. The commutator for car 2 comprisessimilar fixed and moving contacts represented by In order that only theproper signals may be iven, that is, inorder that an up signal sha notbe given fora car which is moving downwardly, and vice versa, I haveprovided what I have termed a directional 2 means which is operated bythe movement of the car as it reverses its direction of movement, so asto render the mechanisms which have been set `bythe up passengersbuttons, for example, incapable of coperating with the commutator todisplay the signals when the .car is moving down, and. vice versa, sothat false signals will not be given. In the construction indicated inFig. 1 I have provided a vibrating switch for each car indi` catedgenerically by 44 and 45, which are thrown when the cars reverse theirdirection of movement, as will be evident to any one skilled in the art.The car 1 at therleft is indicated as moving downwardly, and the switch44 is indicated in its down position. Car 2 is indicated as movingupwardly, and

switch 45 is shown in its up position. A-

wire 46 from contact 36. leads to the movable contact 47, and fromcontactv 34 `a wire 48 leads to Contact 49. 50 and 51 representstationary `contact springs which, when the switch is in the positionshown, contact with 47"and 49 so as to close the breaks. Referring tocarl, it will be seen that 'a circuit has been closed through lamp 8which is indicated as lighted. The circuit may be Y traced from lamp 8,through the commutator contacts 35, 37, 36, hy wire 46 to contact A 47,to Contact 50, through magnet 84 to'conlcan operate the signal. I preferto so arrange the moving and stationary parts of the commutator thatthefsignal will be displayed only when the car is approaching the ioorcorresponding to that signal, and is, for example, one or two oors away.A

53 and 54 are stationary contactsprings lsimilar to 50 and 51 whichengage with the portions 49 and 47 when the 'switch is 'thrown overtothe left. The directional switch 45 is provided with four similarstationary contact springs55 to 58. The car 2 is moving'up and theswitch 45 has been thrown so that the bridging contacts 59 and 60 aretouching the springs 55 and 56.v

From the stationaryf contacts 38 and 40 wires-62 and 61 are connected tothe bridging contacts 59 and 60, respectively, which latter contactstherefore close the circuit fromthe stationary' contacts to the s ringsL 55 and 56. As the springs 55 and' 3 are both connected 'with the uppassengers-button-set lever 24 of the third floor, and the car 2 isadjacent to and moving toward the third floor, a circuit will be closedfrom contact 38 of the commutator by wire 62I and spring 55 to thestationarycontact 30 of the up mechanism for the third floor, and fromthere by passengers-'button-set switch-arm 24 and returnwire to thesource of supply. Thiswill light .up the lamp 9 in car.2 and signal the'car to stop at the third floor. If

the up push-button 13 were also pushed the light -10 would also lightup, because as "shown at 42 the moving contact of the commutator isarranged to touch the stationary contacts at times such thatthe signalwill be given about two vloors ahead of where the car is to stop. Itwill also be obvious that when the' directional switch 45 is thrown tothe opposite position, it will touch the contacts57 and 58 to put thecommutator for' car 2 ink communication with the downpassengers-button-set levers ,for

both floors, and that when the directional switch 44 is thrown to theleft it will touch contacts 54 and 53 and put thepcommutator of. car lin-communication with the up passengers-button-set levers. In order tothrow these switches as the cars' reverse their direction of movement,various means may be ein loyed as will be evident to any one skilledl inthe elevator art, but a convenient mechanism is a loose or frictionalconnection with the overhead mechanism (not a contact in one shown)which will throw I have indicated direction or the other.

-contact 66. 67 and 68 are` magnets connected to the stationary springcontacts 69 and 70, respectively, which -are alternately engaged by thecommon contact 71.A When the switchl 45. is in the position shown andthe car reverses its `directionof movement, the contact 64 will touchthe spring 66, energize magnet 68 (because a circuit is closedthroughthe magnet and by wire 7 2 to return i wire 27) and throw theswitch over to the right to the down position of the switch, that is, to'the same position as indicated by switch 44. This will break thecircuit through magnet 68 as contacts 70 and 71 will separate. ContactV71 will, when the switch 1s thrown, engage with the contact 69 ready tothrow the switch 45 back to its present position when the car againmoves upwardly. It will be observed that switch 45 constitutes one formof a directional means operated by the movement of the car and renderingthe up passengers-button-set mechanisms incapable of coperating with thecommutator of that car to display the signal `when the ca r is movingdown, and vice versa, that is, when car 2 is moving down, for example,the mechanism set by the up push-buttons cannot coperate with thecommutator of car 2 Ato give the signals, and vice versa.

The car l has a similar arrangement for throwing the directional switch14, 73 being the frictionally-driven portion, with its contact 74,stationary contacts 75 and 76,

magnets 77 and 78, spring contacts 79 and 8O and common contact 81.

lIn order to restore the passengers-buttonset mechanisms to normalcondition, various means may be provided, but I prefer to accomplish therestoration by mechanism operated by the Hoor gates or doors. Variousmechanisms have been proposed in the prior art for restoringpush-button-set mechanism to normal condition b v means of the operationof the floor gates, but I have been enabled to accomplish this with asaving in wiring which is advantageous in many instances. In theconstruction shown I have provided a normally-open restoring circuit foreach Hoor, and these circuits are vpreferably independent of each otherso that the closure of one such circuit cannot `re store thepassenges-button-set mechanism of any other floor. These circuitscontrol the restoration of the mechanisms which have been set, to normalcondition, preferably by actually causing such restoration byy means ofmechanism operated by the said circuits.

Referring tothe embodiment of my invention illustrated in Fig. 1, 83 to86 are Irestoring' magnets which when fully energlzed operate toA drawthe switch arms 23 to 26 to the left to break the signal circuits andrestore the switch arms to normal condition. It will be observed thatthese magnets are shown to be in series with the lights in the cars.Each of these incandescent lamps obviously comprises an ohmicresistance, and the ,magnets may be so wound that when the circuitthrough the corresponding light and a magnet is closed, enough currentwill vpass to light up the light, but not enough to fully energize the'magnet. If the light is short-circuited, however, by a shunt around thesame, enough current will flow tothe magnet to fully energize the same,that is. suiiiciently to restore the push-.button-set mechanism to`normal condition. I have provided such a shunt or shortcircuit aroundeach light for this purpose. Referring .to Fig. 2 which shows a detailof the up circuit for lamp 9, it will be observed that currentis'passing through the restoring magnet 85, but not suiiiciently tofully energize the same. 87, 88 is one of the restoring circuits which,it will be observed, comprises a short circuit around the lamp. When theswitch 89 (which represents the door switch) is closed, sufficientcurrent will pass to the magnet 85 to fully energize theA same and drawthe switch arm 21 .to its normal position, where it will make contactwith contact 19, or, in other words, to restore the push-button-setmechanism to normal condition, in this case .also restoring the signalto normal condition.

Referring to Fig. 1, the restoring circuit just described is indicatedby the same iigures of reference. l90 and 91 are stationary terminalsclosed by contact 89 mounted on a pivoted arm 92 under constantstressfrom spring 93. So long as gate 5 is closed it holds the arm 92 in theposition shown, so

that the restoring circuit is open. but when the gate is opened in thedirection of the small arrow, the portion 89 will close the breakbetween the terminals 90 and 91, thus shortcircuiting lamp 9, as currentwill pass by wire 88 to wire 62 and back to magnet 85, as beforedescribed. Each of the other floor gates is provided with a similarswitch indicated by 94 to 96, and as each of the other signals isprovided with a similar short circuit closed b v such switches, it willbe observed that the same operation takes place for the particularpush-button-set mechanism controlled by the switch. It will also beobserved that the directional switches prevent the restoration to normalcondition switch 23 if push-button 12 hadbeen oper.

ated. lThe switch 45 therefore is one form of mechanism automaticallyconnectingithe 10 restoring circuits with only ythose magnetscorrespondingto the up passengers-buttonset mechanisms when the car 2 ismoving up, and vice versa. Obviously the directional switch44 has thesame function with relation to the circuits corresponding to car 1. Theprovision of a. single restoring circuit for each oor gate anddirectional switch mechanism throwing the circuits into connectionv withthe up or with the down magnets which control the restoration, is ofadvantage, because it does away with the necessity of running more thanone circuit to each floor gate, and if these restoring circuits areindependent of each other as they are shown to be in the diagram, theopening of one gate will not restore to normal condition thepush-buttonset mechanism of any other floor. In Fig. 3

I have shown in simplified diagram the construction illustrated in Fig.l, so that it may be more easily followed, similar portions beingindicated by the same reference characters. I have shown this figure tomore clearly indicate the prominent features of the diagram shown inFig. `1.

In Fig. 4 I have'shown a diagramof i Fig. 1 indicating how theup-and-down restoring switches are connected with the restoring magnetsthrough the directional i0 switches which are thrown by the carsmovement, and that it isonly necessary to have one wire from each switchin its own shaft. t I am aware that my invention may be embodied inconstructions widely diiferent in appearance from those illustrated inthe drawings, and I therefore do not confine myself to the constructionshown.

WhatI claim is:

l 1. In an elevator signaling apparatus in -comprising an up and a downpassengers button at each iioor, mechanism corresponding to each buttonset by its button, and a commutator, connections whereby saidsignals areoperable only by the joint action of .said conimutator and apassengers-buttonset mechanism corresponding to the signal, saidcommutator-comprising a part moved correspondingly with the car andadapted to coperate with said button-set-mecha- 8-5 nims in successionin each direction of its movement to operate said signals, directionalmeans operated by the movement ofthe car and rendering the uppassengersbutton-set mechanisms incapable of coperating with theconimutator to operate the signals when the car is moving down, and viceversa, and restoring mechanism to automaticallyY restore saidpassengers-button-set mechanisms to normal condition.

3. In an elevator signaling aparatus in combination, a plurality ofcars, a series of electrically-operated signals, one for each iioor.carried by each car, means for operating the same comprising an up and adown passengers-button at each floor, mechanism corresponding to eachbutton set by its button, and a commutator for each elevator,connections whereby` said signals areoperable only by the joint actionof av commutator and a passenger-s-button-set mechanism corresponding tothe signal, each of said commutators comprising a part movedcorrespondingly with its car and adapted to coperate with saidbutton-set-mechanisms in succession in each direction ofl its movementto operate said signals, and directional means for each car operated bythe movement of its car and rendering the up passengers-button-setmechanisms incapable of cooperating with the commutators to operate thesignals when the cars are moving down, and vice versa.

4. In an elevator signaling apparatus in combination, a plurality ofcars, a series of 120 electrically-operated signals, one foreach Hoor,carried by each car, means for operating the same comprising an tup anda vdown passengers buttonv at each Hoor, mechanism corresponding to eachbutton set by its button, and a commutator for each elevator,connections whereby said signals are operable only by the joint actionof a commutator and a passengers-button-set mechanlsm corresponding tothe signal, each of 13 said commutators comprising a part' movedcorrespondlngly with its car and adapted to cooperate lwith saidbutton-set-mechanisms in succession in each direction of its movement tooperate sald signals, directionalA ing down, and vice versa, andrestoring mechanism to automatically restore said passenger/s button-setmechanisms tonermal condition. I

5.l In an' elevator signaling apparatus in combination, an electricsignal comprising an ohmic resistance, means for setting 'the signalcomprising a passengers button at a floor and mechanism set by 'saidpassengerfs button, restoring mechanism for restoring saidpassengers-button-set mechanism` to normal condition and comprisingamagnet in series with said signal, mechanism operated by said magnetwhen fully energized to restore the button-set mechanism to normalcondition, a normally-open shunt circuit around said resistance, andmeans for closing said shunt circuit to'fully energize said magnetu Y 6.In an elevator signaling apparatus in combination, anl electric .signalcomprising an ohmic -resistance,means for setting the signal comprisinga passengers button at a, oor and mechanism set4 by said passengersbutton, restoring mechanism forV restoring 'said passengers-button-setmechanism to normal condition and comprising a magnet in series withsaid signal, `mecha- '40- nism operated by said magnet when fullyenergized to restore the button-set mechanism to normal condition,afnormally-open shunt circuit around said resistance`,.a ioor gate, andmeans operated by said licor gate for closing said shunt circuit.

7. In an el'evator signaling apparatus in combination, a car,electrically-operated signaling means, mechanism for operating the samecomprising an upand a down passengers button at each tloorand mechanismfor each button set by operation of the corresponding button, a gate ateach floor, restoring mechanism adapted to restore saidIpassengers-button-set mechanisms to normal condition and comprising anormally-open restoring switch for each licor closed by operation of itscorresponding gate and a magnet corresponding to eachpassengers-button-set mechanism and adapted to control the restorationof the same, and mechanism, automatically connecting said restoringswitches with only those magnets corresponding to the up passengers-button-set mechanisms when the car is moving up, and

vice versa, and a commutator having a part moved correspondingly tothemovement of the car and arranged to cause the operation of a signalonlywhen said car is approaching the floor to whichgsaid signalcorresponde.

8. In an elevator signaling apparatus in combination, acar,electrically-operated signaling means, mechanism for operating the samecomprising an up and a down passengers button at each licor andmechanism for each button` set by operation of the correspending`button, a gate at each floor, restoring mechanism adaptedto restore saidpassengers-button-set mechanisms to normal ,condition and comprising anormallyopen restoring switch for each ioor closed by operation of itscorresponding gate and a magnet corresponding to eachpassengersbutton-set mechanism` and adapted to control the restorationof the same, and mechanism automatically connecting said restoringswitches with only those magnets corresponding to the-uppassengers-button-set mechanisms when the car is moving up, and viceversa, said restoring switches being independent of each other wherebythe closure of one of said switches cannot restore thepassengers-button-set mechanism of any other floor, and a commutatorhaving a part moved correspondingly to the 'movement of the car andarranged to cause the operation of asignal only when said car isapproaching the door toy which said signal corresponds. Y l,

9. Inan elevator signaling apparatus in combination, a car,electrically-operated signaling means, mechanism for operating the samecomprising an up and a down passengers buttonat each door and mechanism'for each button set by operation of the corresponding button, a gate ateach licor,

restoring mechanism adapted to restore said 'passengers-button-setmechanisms to' normal condition and comprising a normally-openrestoring' switch for each :door

closed by' operation of its corresponding gate and a restoring magnetcorresponding to each passengers-button-set mechanism to restore thesame to normal condition, and mechanism automatically connecting saidrestoring switches with only those magnets corresponding to the uppassengers-buttonset mechanisms when the car is moving up, and viceversa, and a commutator having a part moved correspondingly lto themovement of the car and arranged to cause the operation of a signal'only when said car is approaching the floor to which said signal corresondal 10. n an elevator signaling apparatus incombination, a car, aslgnaling device for each of a plurality of floors, means for operatingthe same comprising an up and a down passengers-button for each Hoor andmechanism for and s et by each button and a part moved correspondinglywith the car and adapted to coperate with f said mechanisms to operateall said signaling devices in successlon 1n each direction of movementof lthe car, said means also includingy mechanism rendering said movingpart 1ncapable of so coperating with the up passengers-button-setmechanisms when the car is moving down, and vice versa.

11; ln an elevator signaling apparatus in combination, a car, asignaling device for each of a plurality of ioors, means for operatingthe same comprising an up and a down passengers-button for each floorand' mechanism for and set by each button and a part movedcorrespondingly with the car and adapted to coperate with saidmechanisms to operate all said signaling devices in succession in eachdirection of movement of the car, said means also including mechanismrendering said moving part incapable of so coperating with the uppassengers-button-set mechanismswhen the car is moving down, and viceversa, another car, 'and means corresponding individually thereto forrestoring the said passengersbutton-set, mechanismsto normal condition.Y

includingv mechanism rendering said moving part incapable of socoperating withv the up passengers-button-setmechanisms when the car ismoving down, and vice versa.

13. En -an elevator signaling apparatus in combination, a car, asignal-controlling circuit for each of a plurality of. floors, asignaling device foreach floor, each operated by one ,of said circuits,means controlling said circuits and comprising an up and a downpassengers-button for each ioor and mechanism for 'and set by eachbutton and a commutator coperating therewith and having a part movedcorrespondingly with the car and adapted to close all said clrcuits 1nsuccession 1n eachv direction of movement of the car, said means alsoincluding' mechanism rendering said moving part incapable of so,coperating withl the up passengers-button-set mechanisms when the car ismoving down, land vice versa, another car, and means correspondingindividually thereto for restoring said passengers-button-set mechanismsto normal condition. f

14. ln an elevator signaling apparatus in combination, a car, asignal-controlling circuitfor each of 'a plurality of iioors, a signallamp for each fioor eachoperated by one of said circuits, meanscontrolling said circuits and comprising an up and a downpassengers-button for each floor -and mechanism for and set by eachbutton and a commutator coperating therewith and having a part movedcorrespondingly with `the car and adapted to close all said signalcircuits in succession in each direction of movementof the car, saidmeans also including mechanism rendering said moving part incapable of'so coperating with the up passengersbutton-set mechanisms when the caris moving down, and vice versa.

15. In an elevator signaling apparatus in combination, two cars, and foreach floor and corresponding to each car a single signaling deviceadapted to cause a signal to be given in eachA direction of movement, ofits car, means for operating the same yin each direction .of movement ofthe cars and com-l prising an up and a down passengersbutton at eachiioor, and for each button signal-controlling mechanism set wheneverthat button is operated 4and adapted to control the operation of thecorresponding signalsol ing devices for that floor, and for each carswitch mechanism automatically operated by that car and rendering the uppassengersbutton set mechanisms incapable vof controlling the operationof the said signaling devices corresponding to that car while that caris moving down, and restoring mechanism corresponding to each car forrestoring the passenger-s-button-set mechanisms.

' 16. In an elevator signaling apparatus in combination, two cars, andfor each fioor and corresponding to each car a single lamp adapted tocause a signal to be given in each direction of movement of its car,means for operating the same in each direction of movement of the carsand comprising an up and a down passengers-button at each floor, andfor-'each button signal-controlling mechanism set whenever that buttonis operated and adapted to control the operation of the correspondinglamps for that door, and for each car switch mechanism automaticallyoperated by that car and rendering the up passengers-button-setmechanisms incapable or controlling the operation of the said lampscorrespondingl to that car while lthat car is moving down, and restoringmechanism corresponding to each car `for restoring thepassengers-button-set mechanisms.

17. in an elevator signaling apparatus in combination, 'two cars, andfor each floor and corresponding to each car a single signaling deviceadapted to cause a signal to be given in each direction off movement orits car, means for operating the same in each direclGO A vair/3,192

tion of movement of the cars and compris-V ing an up and a down,passengers-button at each Hoor, and for each button signalcontrollingmechanism set whenever that button is operated and adapted to controlthe operation of the corresponding signaling devices for that floor, andfor each car switch mechanism automatically operated by that car andrendering `the up passengers button set mechanisms incapable ofcontrolling the operation of the said signaling devices corresponding tothat car while that car is moving down, and a commutator operated bythat car and causing its signals 'to be given successively, andrestoring mechanism corresponding to each car for restoring thepassengers-button-set mechanismsl 18. In an elevator signaling apparatusin combination, two cars, and for each floor and corresponding to veachcar a single signaling device adapted to cause a signal to be given ineach direction of movement of its car, means for operating the same ineach direction of movement of the cars and comprising an up and a downpassengers-button at each Hoor, and for each 'button a singlesignal-controlling mechanism set whenever that button is operated andadapted to control the operation of the corresponding signaling devicesfor that floor, and for each car switch mechanism automatically operatedby that car and rendering the up passengers-button-set mechanismsincapable of controlling the operation of 'the said signaling devicescorresponding to that car while that car is moving down, and restoringmechanism corresponding to each car for restoring the'passengei"sbutton-set mechanisms.

19. In anelevator signaling apparatus in combination, a car, a signal,means for operating the same comprising a passengers-button on a'oor anda device set thereby whenever said passengers-button is operated, amagnet arranged to control the restoration of said device, a circuittherethrough having a normally-open switch automatically closed whensaid passengers-button is operated and said device is set, a shortcircuit arranged to control the restoration-operation of said magnet,and a circuit-shifting switch operated by the car and automaticallyrendering said short circuit incapable of controlling the magnet duringone direction of movement of the car.

20. In an elevatol signaling apparatus in combination, a car, signalingmeans, means for operating the same comprising up and down mechanismscorresponding to a floor and arranged to be set by a passenger on afloor, a restoring magnet for each passenger-set mechanism and a circuittherefor having a normallyopen switch therein closed automatically whensaid passengerset mechanism is moved to its signal-setting position, asingle normally-open switch controllable by the car operator, andcircuit-shitting mechanism serving to connect said single normally-openswitch with said restoring magnets alternately.

2l., In an elevator signaling apparatus in combination, a car, signalingmeans, means for operating the same comprising up and down settingcircuits and mechanism corresponding to and lset'by each circuit, andmeans operatedby the passenger on the floor for closing said circuits,an electricallycontrolled restoring means Jfor each passenger-setmechanism, a single normally-open switch controllable by the caroperator, and a circuit-shifting switch serving to connect said singlenormally-open switch with said restoring means alternately, saidcircuitshifting switchA being independent of said setting circuit.whereby the passenger may close a setting circuit at any time andirrespective of the direction said car or any other carlma-y be moving.

22. ln hn elevator signaling apparatus in `combination, a car, a singlesignaling means for each of a'plurality of floors, means for operating'the same in each direction of movement of the car comprising acommutatoil adapted to operate each signal as the car approaches itsfloor and up and down signal-controlling mechanism corresponding to eachdirection of movement of the car and arranged to be set by a passengeron a floor, another car having a similar signaling device for each loorcontrolled by said passenger-set mechanisms, and circuit-shiftingmechanism arranged to prevent the down passenger-set mechanism fromtransmitting a signal to an tip-moving car when 'the other car is movingdown.

9.3. in an elevator signaling apparatus in combination, a car, signalingmeans, means `for operating the same comprising an up and a downpassengers-button at a floor and mechanism corresponding to and set byeach button, an electrically-controlled restoring magnet and circuit foreach passengersbutton set mechanism, circuit changing mechanismincluding a single nornally-open switch and a circuit-shifting switchserving to connect said single normally-open switch with'said restoringmagnets alternately, .said circuit-changing mechanism also including apart moved correspondingly with the car during its travel and adapted tocooperate with said circuitshifting switch inclosing the circuits tosaid magnets, whereby the circuits through said normally open switch andto said magnets are closed only when the car is near the said iioor.

l 24. In. an elevator signaling apparatus in combination, a car, anelectrically-operated signal-giving device and circuit therefor, acommutator adapted to close said circuit as alternately, and means forrestoring the Setting-circuit switches.

Signed at the borough of Manhattan in I the county, city and State ofNew York, this 3:)

28 day of September A. D. 1907.

PAUL T. KENNY.

Witnesses:

RoMoLA GORDON, G. A. LEE'.

